US5346481AExpiredUtility

Vaccine delivery system

Assignee: MERCK & CO INCPriority: Oct 14, 1993Filed: Oct 14, 1993Granted: Sep 13, 1994
Est. expiryOct 14, 2013(expired)· nominal 20-yr term from priority
Inventors:Leonid Bunin
A61M 5/282
32
PatentIndex Score
16
Cited by
4
References
6
Claims

Abstract

A disposable vaccine delivery system containing a single dosage vaccine, having a compressible "hour-glass" shaped container portion filled with a needle, containing the vaccine, enclosed in a rigid clamp assembly having syringe-type activation means for compressing and expelling the vaccine contents into the human subject.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. A vaccine delivery system suitable for human or animal administration comprising a single dosage hypodermic syringe having an "hour-glass" shaped container portion made of plastic, said container portion sized so that the air and the minor drop of contents ejected during aspiration is equivalent in volume to the lower half of the "hour-glass" shaped container; a needle portion comprising a hollow sharp needle extending from one neck of the plastic container portion and a rigid clamp assembly means fitted with plunger means at the other end which can be slidably moved over the container portion expel the container contents. 
     
     
       2. The system of claim 1 in which the container portion is disposable and made of a thermoformed plastic compatible with medication. 
     
     
       3. The system of claim 2 in which the container portion is made of PVC, polypropylene or PET/polyethylene laminate. 
     
     
       4. The system of claim 1 in which the rigid clamp assembly is multiuse and made of a moldable plastic. 
     
     
       5. The system of claim 4 which the clamp assembly is made of Delrin polyester. 
     
     
       6. The system of claim 5 in which the clamp assembly has a flat surface to receive the container portion, fitted on one end with a snap collar to engage the neck of the container portion and having plunger means at the other end.

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